Question about LG Televison & Video
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Posted on Jan 02, 2017
SOURCE: ESA 42 Plasma picture problem
The power supply is having difficulty. The typical cause is
underated electrolytic capacitors. I would examine all the caps
(round cylindrical cans) in the power supply and see if any of them are
bulged. Not a bad idea to just replace all of them with better
These type of caps have all kinds of specs. Not just voltage and capacity, but also temperature, case size, and obtuse stuff like dissipation factor. Most all power supplies use switching type designs that run at serious frequencies (not the old 60 hz - more like 50khz) that stress out these electrolytic caps and many circuit designers (or their cheap bosses) don't specify the better parts. Replace them with the same capacitance, but higher voltage, and higher temp parts (hopefully they will not be too big physically).
Ya, I know you paid $$$ for this TV and they scrimped on cheap parts. Yup, the more expensive a product is, the more pressure the bean counters put on keeping the price down.
Hope Ya Fix It.
Posted on Feb 12, 2008
I had the same problem with MY Vzio L32 randomly powering itself on and off. The problem Is U26 on the main board. Solder a 10K resister to pins 2 and 3.
Posted on Jul 15, 2008
I had the exact same problem and I fixed my Westinghouse 32 inch by replacing the power supply. You can purchase it at
I takes about 15 minutest to replace. Just take the back lower panel off and replace the power supply. Mine works like new now.
Posted on Jan 25, 2009
I had a technician fix this exact problem today it is the POWER SUPPLY the TV is not getting enough power to the main board, i have been searching for weeks and no one ever post a solution here it is guys get them fixed $200 only
Posted on Apr 24, 2009
I had a similar problem with my 32 inch plasma tv. I called vizio's
1 800 number and the guy said to unplug the tv from the wall and hold down the power button for a minute and then plug the tv back in outlet and turn on. And it works I guess from what I understood from his heavy accent was that the tv retains power and this resets it somehow. hope that was helpfull!!
Posted on Nov 04, 2009
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